Combined milk and cream pasteurizer and cooler.



. No. 85mm. PATENTBDPR. so, 1907;; .mh AHLBRS. commu) www@ .GEMM PASTBUMZEB ANDGOOLER.

APPLICATION FILED-APR. 30. 1906.

WHW-1 3 D m 5.51. N A :w

PATBNTED APR. B0, 1907.

J. L. A-HLDDS. y COMBINED MILK AND DREAM PASTLDRIZDR AND OOOLDD.

APPLICATION FILED APR.30. 1906.

3 SHEETS-SHEET N' 1 971 PATENTED APR. so, 1907.

'85 .L L. AHLBRS,

`UOMBINBD MILK '.ND UREAM PASTEURIZER AND COOLER.

UPLIOATIOH FILED APR. 30. 1906.

3 SEBBTB-SHEET 3.

la'cmfww fem. yv/ jagd@ it), 'which pipe is intended to convey brine, iee Water, or any other effective cooling inedii'im or chemical through the pipe 2() which is the outside jacket or pipe, and likewise a pipe 2l lwhich is the center or internal pipe and conveys a similar Cooling medium as the pipe i9; the inilk in this instance, as iii the other instance, lying between the two.

in order to drain the entire apparatus, fau eets 22, 23, are opened, by reason ot which all the Water, brine, or condensed steam which may be in the pipes will be allowed to drain ofi`,and'in order to purify the pipes or cleanse them of whatever impurities may have collected during!` the operation. the ValveV 24 is opened, consequently permitting steam to pass through all of the pipes through Whieh the milk has been circulated.

i. A pasteurizer comprising a plurality of pipes arranged to convey milk, cream, and i other liquids, said pipes being arranged in an inclined plane whereby the flow is aeceleri ated by gravity, a steam-eonveying pipe surrounding said milk pipe, an inlet for said steam pipe, a cooling' vpipe wit-hin said'niilk pipe' and a cooling pipe surrounding said milk'pipe wl'iereby the milk lies between tiro cooling Surfaces, and an inlet for t-he cooling medium. l

2. A pasteurizer comprising a plurality oi tubes, said tubes being? out of horizontal alinenient with each other andar'ranged to convey milk by ,gravityl said tubes being contiguous with veach. other andl having an 'inlet' and an outlet; a pipe surrounding the milk pipe, a steam inlet for said pipe, eooling pipes .surrounding the milk pipes, cooling pipes extending through the milk pines, an inlet for said pipes, the steam inlet anu water inlet being intermediate. the inlet and outlet for the pipes, and means whereby the tubes may be drained.

3. A pasteurizer comprising a plurality of pipes arranged out of liorizonta alinement and contiuous with eachother whereby the milk fed virom one end courses through said pipes by gravity to the outlet, a pipe surrounding said 'milk pipe, .a steam inlet lor said ipe lor heating); the niilk while in its trave the steain being injected in a dii-eetion opposite to that. of the travel of the within said inilk'pipe, an. inlet for the coo ing medium, said cooling pipe beingr arranged on a level lower than that of the sieain inlet; an

outlet tor said cooling p1pe,'aiid means for draining` the pipe.

hfl. A pasteurizer comprising a pipe composed ol sections arranged out. of horizontal V alinement with each other, a pipe eiiteiiding through a portion of said pipes, a steam inlet. for said pipe for allowing the steam to be injected in a'direction reverse to that of the travel of the milk, an outlet for the heated milk, an outlet for the heating medium,4 tw'c pipes n ithin theloWerseet-ion of said pasteurizing;l pipe arranged to earry'a cooling inedinni, the milk being forced to travel between said 'pipes whereby the cooling area 'ofthe adjacent surfaces of the pipes is' increased, and an outlet for the cooling,r medium.

5. pasteurizer comprising a plurality'fof pipes arranged to convey milk, cream, and other liquids, vsaid pipes being arranged in an inclined plane whereby the tlow is accelerated by gravity, removable headers on said ing said milk pipe, an inlet or said steam pipe, a coolingr pipe within said milk pipe, and a cooling pipe surrounding said milk ipe whereby the milk lies between two eooing surfaces, and an inlet for the eooling medium.

6. A pasteurizer.comprising a pluralit)v of pipes arranged to eonrey milk, cream, and other liquids, said pipes beingT arranged in an inclined plane whereby the lloY is aeeelier` ated 'by gravity, a steam conveying pipeI surrounding said milk pipe, an inlet for said, steam pipe, a cooling pipe n ithin said milk' 'pipes for cleansingl said pipes of adhering impurities, a steam conveying ipe surround-Y ingv surfaces, and tu'o'iulets for eool pipe whereby fhe milk lies between tivo Cool-- 

